definition of
active

[1] #1 active n. [active agent] chemical agent capable of activity. wn

[2] #2 active a. tending to become more severe or wider in scope; "active tuberculosis". wn

[3] #3 active a. disposed to take action or effectuate change; "a director who takes an active interest in corporate operations"; "an active antagonism"; "he was active in drawing attention to their grievances". wn

[4] #4 active a. characterized by energetic activity; "an active toddler"; "active as a gazelle"; "an active man is a man of action". wn

[5] #5 active a. exerting influence or producing a change or effect; "an active ingredient". wn